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11 Jun 2019, 01:36
Kudos
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
17% (02:47) correct
83%
(02:17)
wrong
based on 12
sessions
History
Date
Time
Result
Not Attempted Yet
In a survey conducted to find out the readership of three Newspapers A,B and C, it was found that the number of newspaper A is at least 20 and at most 40. The number of people who read newspaper B is at least 50 and at most 70. The number of people who read newspaper C is at least 70 and at most 83. It was also found that 8 people read all three newspapers. Find the minimum number of people who read both A and B but not C.
A. 0
B. 1
C. 2
D. 3
E. 5
A. 0
B. 1
C. 2
D. 3
E. 5
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11 Jun 2019, 06:19
Kudos
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With the given information it's clear that minimum number of people who read both A and B but not C can be 0. It doesn't look like a 700 problem or the question is missing some info.
Bunuel
11 Jun 2019, 06:20
Kudos
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Bunuel
Let the people who read A and B but not C = x (as shown)
For x to be minimum, We have to maximize C i.e, C = 83 and adjust 83 (as shown)
I would try to give the least value possible = 0 and try adjust A and B to fit the values given 20 ≤ A ≤ 40 and 50 ≤ B ≤ 70
32 is because Maximum value of A = 40 and Give the remaining 43 and eventually B = 51 (valid range)
So, Least value = 0
IMO Option A
Pls Hit kudos if you like the solution
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